cat.h

// Peaberry CW - Transceiver for Peaberry SDR
// Copyright (C) 2015 David Turnbull AE9RB
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

#ifndef CAT_H
#define CAT_H

#include <string>
#include <cstdint>

#include "libusb/libusb.h"

#include "Config.h"

#define USBDEV_SHARED_VENDOR    0x16C0  // VOTI  VID
#define USBDEV_SHARED_PRODUCT   0x05DC  // OBDEV PID 
#define VENDOR_NAME_OBDEV		"www.obdev.at"

#define IAMBIC_MODE_B       (1 << 0)
#define IAMBIC_SKEY         (1 << 1)
#define IAMBIC_AUTOSPACE    (1 << 2)
#define IAMBIC_RST_N        (1 << 7)

class Cat {
public:
	Cat() {}
	~Cat() {}
	bool init();

	const std::string get_error() const { return error; }
	std::string error;
	std::string serialNumber;

	// Set local oscillator frequency in Hz.
	bool set_freq(int64_t frequency);
	// Set the CW TX frequency in Hz.
	bool set_cw_tx_freq(int64_t frequency);
	// Set the CW keyer speed in Words per Minute.
	// Limited to <5, 45>
	bool set_cw_keyer_speed(int wpm);
	bool set_cw_keyer_mode(KeyerMode mode);
	// Delay of the dit sent after dit played, to avoid hot switching of the AMP relay, in microseconds. Maximum time is 15ms.
	// Relay hang after the last dit, in microseconds. Maximum time is 10 seconds.
	bool set_amp_control(bool enabled, int delay, int hang);

	bool setIQBalanceAndPower(double phase_balance_deg, double amplitude_balance, double power);

private:
	int findPeaberryDevice();
	std::string readUsbString(struct usb_dev_handle *udh, uint8_t iDesc);

	libusb_context			*m_libusb_context = nullptr;
	libusb_device			*m_libusb_device  = nullptr;
	libusb_device_handle	*m_libusb_device_handle = nullptr;

	int64_t freqChangeMark = 0;
	int64_t currentFreq = 0;
	int64_t requestedFreq = 0;
	int64_t freq = 0;
	int64_t xit = 0;
	int64_t rit = 0;
	bool	transmitOK = false;

	void start();
	void stop();
	void setFreq(int64_t f) { freq = f; requestedFreq = f + rit; approveTransmit(); }
	void setXit(int64_t f) { xit = f; approveTransmit(); }
	void setRit(int64_t f) { rit = f; requestedFreq = f + freq; }

private:
	void doWork();
	void approveTransmit();
};

extern Cat g_Cat;

#endif // CAT_H